CN202126270U - Non-contact passive holddown photomagnetic multi-rotation absolute position sensor - Google Patents
Non-contact passive holddown photomagnetic multi-rotation absolute position sensor Download PDFInfo
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- CN202126270U CN202126270U CN2011201755674U CN201120175567U CN202126270U CN 202126270 U CN202126270 U CN 202126270U CN 2011201755674 U CN2011201755674 U CN 2011201755674U CN 201120175567 U CN201120175567 U CN 201120175567U CN 202126270 U CN202126270 U CN 202126270U
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Abstract
The utility model relates to a non-contact passive holddown photomagnetic multi-rotation absolute position sensor. The sensor comprises an input shaft, an input gear, magnetic steel, a photoelectric encoder circuit board, a magnetic rotary encoder circuit board, a transition shaft, a cover and a base, wherein the input gear is arranged at the lower end of the input shaft; the magnetic steel is fixed at the upper end of the input shaft; at least a pair of encoder gears and a pair of transition gears are respectively arranged on the input shaft and the transition shaft; a magnetic rotary encoder is arranged on the magnetic rotary encoder circuit board and over against the magnetic steel; and at least a group of light emission and reception elements are arranged on two surfaces of the photoelectric encoder circuit board. In the utility model, the sensor can obtain higher precision and has the advantages of absolute uniqueness at each position, high reliability, anti-interference, no need of power-down memory and the like; and compared with the traditional absolute sensor, the sensor provided by the utility model has the advantages of high precision, small volume, large measuring scope and the like, is compact in structure and low in cost.
Description
Technical field
The utility model relates to the optomagnetic many revolution absolute position transducers of a kind of contactless passive maintenance.
Background technology
Automation control system all need rely on position feed back signal work, and scrambler is the center-stage feedback assembly.Existing encoder can be divided into incremental encoder and absolute type encoder two big classes.
Incremental encoder can only receive a succession of identical pulse, confirms through active mode the relative coding mode to be used as specific coding and to use in its position through counting equipment.Motionless or when having a power failure when scrambler, rely on the internal battery memory area, receive factor affecting such as battery life, low temperature inefficacy, the loose contact of being shaken, reliability reduces greatly.When work, in the scrambler output pulse process, have and disturb and pulse-losing, produce skew the zero point that causes remembering, and the amount of skew can be known after the generation of mistake.
Band through the return reference point mode, is modified to memory area with the reference position with reference to the incremental encoder of point type.Before RP, be the accuracy that can not guarantee the position.In industry control, just have each operation to look for RP earlier, the start small change could get into normal operating conditions then, very inconvenience.Especially many automation equipments do not allow in when start when accident dump and restart (or) uncontrolled searching zero point motion is arranged.
The code-disc of absolute type encoder has many code channels, and each bar code channel is the donut that note that diameter does not wait has coded message, and each bar code channel has it independently to read a yard detector.The absolute corner of scrambler comprehensively each code channel output signal of reading yard detector is confirmed uniquely.The relation of code channel number n and resolution R is R=2
nObviously, code channel is many more, and resolution is just high more.But many code channels code-disc is made difficulty, and physical dimension is big, costs an arm and a leg.For the absolute type encoder of individual pen, when code-disc rotated above 360 °, coding was got back to initial point again, does not so just meet the specific coding exclusivity principle.
The utility model content
The purpose of the utility model is the deficiency to above-mentioned prior art; Provide a kind of contactless passive maintenance optomagnetic many revolution absolute position transducers, each position need not remembered by the unique decision of mechanical location; Need not look for RP; The influence that is not had a power failure, disturbs, its reliability is high, precision is high, measurement range is big, compact conformation, cost are low, can be used for how rotatable angular displacement and accurately test.
The technical scheme of the utility model is: this device comprises input shaft, be arranged on the input gear of input shaft lower end, be fixed on magnet steel, photoelectric encoder circuit board, magnetic rotary encoder circuit board, transition axis, cover cap and the base of input shaft upper end; Described cover cap and base are used for fixing and this device are installed; Also be respectively equipped with at least one pair of encoder gear and transition gear on described input shaft and the transition axis, described encoder gear is provided with the coding code channel; Described magnetic rotary encoder circuit board is provided with magnetic rotary encoder, and magnetic rotary encoder is right against magnet steel; Described photoelectric encoder circuit board two sides is all installed at least one group of light and is transmitted and received element.
Described magnetic rotary encoder is the contactless magnetic rotary encoder of AS5045.
Described magnet steel is bipolar magnet steel.
Described each encoder gear is through the transition gear geneva motion.
Described light transmits and receives element and is right against the coding code channel on the encoder gear, and it is identical with coding code channel quantity on the encoder gear that light transmits and receives the number of element.
Described input shaft and transition axis laterally arrange.
Described photoelectric encoder circuit board is parallel with encoder gear to be oppositely arranged.
The utility model can obtain higher precision through utilizing the magnetic rotation absolute encoder; Utilize the principle of reduction gear to increase the range that the photoelectricity absolute encoder has increased absolute encoder; Compare with incremental encoder, have that each position is definitely unique, reliability is high, anti-interference, need not advantages such as power-failure memory.Compare with traditional absolute sensor have the precision height, advantage such as volume is little and measurement range is big, and the utility model compact conformation, cost are low.
Description of drawings
Fig. 1 is the structural representation of the utility model.
1 is the input gear among the figure, the 2nd, and encoder gear, the 3rd, the photoelectric encoder circuit board, the 4th, light transmits and receives element; The 5th, magnetic rotary encoder circuit board, the 6th, input shaft, the 7th, magnet steel, the 8th, magnetic rotary encoder; The 9th, transition axis, the 10th, transition gear, the 11st, cover cap, the 12nd, base.
Embodiment
The optomagnetic many revolution absolute position transducers of contactless passive maintenance; This device comprises input shaft 6, be arranged on the input gear 1 of input shaft 6 lower ends, be fixed on magnet steel 7, photoelectric encoder circuit board 3, magnetic rotary encoder circuit board 5, transition axis 9, cover cap 11 and the base 12 of input shaft 6 upper ends; Described cover cap 11 is used for fixing with base 12 and this device is installed; Also be respectively equipped with two pairs of encoder gears 2 and transition gear 10 on described input shaft 6 and the transition axis 9, described encoder gear 2 is provided with the coding code channel of making according to coding rule; Described magnetic rotary encoder circuit board 5 is provided with magnetic rotary encoder 8, and magnetic rotary encoder 8 is right against magnet steel 7; Described photoelectric encoder circuit board 3 two sides are all installed one group of light and are transmitted and received element 4; Described magnetic rotary encoder 8 is the contactless magnetic rotary encoder 8 of AS5045; Described magnet steel 7 is bipolar magnet steel 7; Described each encoder gear 2 is through transition gear 10 geneva motions; Described light transmits and receives element 4 and is right against the coding code channel on the encoder gear 2, and it is identical with coding code channel quantity on the encoder gear 2 that light transmits and receives the number of element 4; Described input shaft 6 laterally arranges with transition axis 9; Described photoelectric encoder circuit board 3 and encoder gear 2 parallel being oppositely arranged.
Photoelectric encoder circuit board 3 two sides are all installed one group of light and are transmitted and received element 4, and the number of photocell and light receiving element is equal to the code channel quantity of face code on the encoder gear 2, and light transmits and receives element 4 and faces the code channel on the encoder gear 2.Photocell is transmitted into light on the code channel, and the light receiving element corresponding with each code channel receives the light that reflects from code channel.Integrated treatment circuit on the photoelectric encoder circuit board 3 connects all light receiving elements, is used to handle the signal that each light receiving element collects, and then obtains and the unique corresponding specific coding value of each angular displacement.
When input shaft 6 rotational angles during greater than 360 °; Make encoder gear 2 rotate an angle through transition gear 10; The reduction gear ratio of input shaft 6 and encoder gear 2 is set, makes it to equal coding groove number on the encoder gear 2, read the accuracy of coding to guarantee light receiving element.
The range required according to absolute encoder can be made some right encoder gears 2, and ability is with good expansibility.
Each encoder gear 2 adopts intermittent drive mechanism by transition gear 10 transmissions, guarantees that light receiving element reads the accuracy of coding.
Above-described embodiment, this patent embodiment a kind of more preferably just, common variation that those skilled in the art carries out in the utility model technical scheme scope and replacement all should be included in the protection domain of the utility model.
Claims (7)
1. the optomagnetic many revolution absolute position transducers of contactless passive maintenance; This device comprises input shaft, be arranged on the input gear of input shaft lower end, be fixed on magnet steel, photoelectric encoder circuit board, magnetic rotary encoder circuit board, transition axis, cover cap and the base of input shaft upper end; Described cover cap and base are used for fixing and this device are installed; It is characterized in that: also be respectively equipped with at least one pair of encoder gear and transition gear on described input shaft and the transition axis, described encoder gear is provided with the coding code channel; Described magnetic rotary encoder circuit board is provided with magnetic rotary encoder, and magnetic rotary encoder is right against magnet steel; Described photoelectric encoder circuit board two sides is all installed at least one group of light and is transmitted and received element.
2. the optomagnetic many revolution absolute position transducers of contactless passive maintenance according to claim 1, it is characterized in that: described magnetic rotary encoder is the contactless magnetic rotary encoder of AS5045.
3. the optomagnetic many revolution absolute position transducers of contactless passive maintenance according to claim 1, it is characterized in that: described magnet steel is bipolar magnet steel.
4. the optomagnetic many revolution absolute position transducers of contactless passive maintenance according to claim 1, it is characterized in that: described each encoder gear is through the transition gear geneva motion.
5. the optomagnetic many revolution absolute position transducers of contactless passive maintenance according to claim 1; It is characterized in that: described light transmits and receives element and is right against the coding code channel on the encoder gear, and it is identical with coding code channel quantity on the encoder gear that light transmits and receives the number of element.
6. the optomagnetic many revolution absolute position transducers of contactless passive maintenance according to claim 1, it is characterized in that: described input shaft and transition axis laterally arrange.
7. the optomagnetic many revolution absolute position transducers of contactless passive maintenance according to claim 1, it is characterized in that: described photoelectric encoder circuit board is parallel with encoder gear to be oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201755674U CN202126270U (en) | 2011-05-30 | 2011-05-30 | Non-contact passive holddown photomagnetic multi-rotation absolute position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201755674U CN202126270U (en) | 2011-05-30 | 2011-05-30 | Non-contact passive holddown photomagnetic multi-rotation absolute position sensor |
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| Publication Number | Publication Date |
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| CN202126270U true CN202126270U (en) | 2012-01-25 |
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| CN2011201755674U Expired - Fee Related CN202126270U (en) | 2011-05-30 | 2011-05-30 | Non-contact passive holddown photomagnetic multi-rotation absolute position sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322881A (en) * | 2011-05-30 | 2012-01-18 | 扬州电力设备修造厂 | Non-contact passive hold-down photomagnetic multi-rotary absolute position sensor |
| CN103925933A (en) * | 2013-01-11 | 2014-07-16 | 江苏多维科技有限公司 | Multi-circle absolute magnetic encoder |
| CN103940457A (en) * | 2014-05-12 | 2014-07-23 | 长春禹衡光学有限公司 | Method for realizing counting turns of electronic type multi-turn encoder with low power consumption |
-
2011
- 2011-05-30 CN CN2011201755674U patent/CN202126270U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322881A (en) * | 2011-05-30 | 2012-01-18 | 扬州电力设备修造厂 | Non-contact passive hold-down photomagnetic multi-rotary absolute position sensor |
| CN103925933A (en) * | 2013-01-11 | 2014-07-16 | 江苏多维科技有限公司 | Multi-circle absolute magnetic encoder |
| CN103925933B (en) * | 2013-01-11 | 2016-12-28 | 江苏多维科技有限公司 | A kind of multi-turn absolute magnetic encoder |
| CN103940457A (en) * | 2014-05-12 | 2014-07-23 | 长春禹衡光学有限公司 | Method for realizing counting turns of electronic type multi-turn encoder with low power consumption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YANGZHOU ELECTRIC POWER EQUIPMENT MANUFACTURE FACT Free format text: FORMER NAME: YANGZHOU ELECTRIC POWER EQUIPMENT REPAIR + MANUFACTURE FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 225003 Wenchang Middle Road, Jiangsu, China, No. 77, No. Patentee after: Company limited of Yangzhou Electric Power Equipment Repair & Manufacture Factory Address before: 225002 No. 77 middle Wenchang Road, Jiangsu, Yangzhou Patentee before: Yangzhou Electric Power Equipment Repair & Manufacture Factory |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120125 Termination date: 20200530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |